Forming of Components with Microgearings from Coil Material-Numerical Modeling of the Process Chain and Experimental Validation

Compared to alternative production methods, cold forming offers technological, economic and ecological potential for the mass production of microgears. Within the current boundaries of the technology, the cold forming of modules m < 0.2 mm is not possible due to size effects, high tool stresses a...

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Bibliographic Details
Published in:Micromachines (Basel) 2021-11, Vol.12 (12), p.1456
Main Authors: Rohrmoser, Andreas, Kraus, Martin, Merklein, Marion
Format: Article
Language:English
Subjects:
Coils
Cold
Cold working
Extrusion dies
Gear teeth
Investigations
Mass production
Mathematical models
Metal forming
micro forming
microgear
Modules
multi-step micro forming
Numerical models
Process management
Production methods
sheet-bulk metal forming
Size effects
Strain hardening
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Summary:Compared to alternative production methods, cold forming offers technological, economic and ecological potential for the mass production of microgears. Within the current boundaries of the technology, the cold forming of modules m < 0.2 mm is not possible due to size effects, high tool stresses and handling problems. The investigations of this contribution present a novel process chain for the multi-step forming of microgears with a module of m = 0.1 mm. For this purpose, a numerical model of the first two steps of the process chain is set up and confirmed based on experimental forming tests. The results have proven the feasibility of the process chain by a complete forming of the gear teeth.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi12121456